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arXiv 1205.4802cs.LO
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二元逻辑中交替层次的一个有效刻画

An effective characterization of the alternation hierarchy in two-variable logic

Andreas Krebs, Howard Straubing

摘要:

本文用恒等式刻画了二元一阶逻辑量词交替层次中各个层次的语言。这意味着个人水平的可决定性。更一般地,我们证明了一个可判定簇与簇J的双边半直积是可判定的。

英文摘要:

We characterize the languages in the individual levels of the quantifier alternation hierarchy of first-order logic with two variables by identities. This implies decidability of the individual levels. More generally we show that the two-sided semidirect product of a decidable variety with the variety J is decidable.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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